Date of Presentation:9/12/2023

Attending pathologist: Anil Parwani, MD, PhD, MBA

Presented by: Lucas Bushrow, DO

Prepared by: Kristina Slyh, OMS2

Organ:Kidney

HISTORY:

A female in her 60’s with history of ESRD, diabetes mellitus type 2, hypertension, and gout presented for renal transplant evaluation.

MRI revealed a 1.5 cm lesion of the right kidney suspicious for a renal cell carcinoma. A robotic radical nephrectomy with regional lymphadenectomy was performed.

A 1.4 x 1.3 x 1.2 cm well-circumscribed, solid brown lesion was identified within the superior pole. Negative for hemorrhage or necrosis. Lesion does not involve the renal sinus fat, perirenal fat, or renal vasculature.

GROSS:

Microscopic image possibly detecting cancerous areas in human tissue
Microscopic image possibly detecting cancerous areas in human tissue
Microscopic image possibly detecting cancerous areas in human tissue
Microscopic image possibly detecting cancerous areas in human tissue
Microscopic image possibly detecting cancerous areas in human tissue
Microscopic image possibly detecting cancerous areas in human tissue

What is the most likely diagnosis?

  1. Eosinophilic Chromophobe Renal Cell Carcinoma
  2. Renal Oncocytoma
  3. Low-grade oncocytic tumor
Low-grade oncocytic tumor